Fuse Between Solar Panel And Charge Controller

With 10a fuse you could deliver 120w before it breaks.

Fuse between solar panel and charge controller.

There are three different locations that we recommend installing fuses or breakers. Mini fuses are typically used for small system components like battery management systems or monitors. 10a car fuses are fine for that. Maxi fuses provide circuit protection typically between a charge controller or small inverter and a battery bank.

As an example blue sky recommends a 60 amp fuse breaker for their solar. First between the charge controller and battery bank second between the charge controller and solar panels and third would be between the battery bank and inverter to determine the fuse size needed between the charge controller and battery bank you simply match the amperage rating on the charge controller. Mppt charge controllers on the other hand are able to both lower the voltage and increase the current flowing between the controller and the battery bank so the exact size wire and fuse size must be recalculated or obtained from the charge controller manual. Jst ensure you use appropriate wire gauge.

Class t fuses are used as circuit protection between a battery bank and an inverter. I guess the fuse it ment to safeguard the solar charger if you by accident should short the wires or swap the wires on the battery.